1. Department of Neurology, Institute of Neurological Sciences, Southern General Hospital, Glasgow, UK
2. School of Social and Community Medicine, University of Bristol, Bristol, UK
3. Institute of Neuroscience, University of Newcastle, Newcastle upon Tyne, UK
4. Institute of Psychological Medicine and Clinical Neurosciences, MRC Centre for Neuropsychiatric Genetics and Genomics, Cardiff University, Cardiff, UK
5. Department of Neurology, Queen’s Medical Centre, Nottingham, UK
6. Department of Clinical Neurosciences, John van Geest Centre for Brain Repair, Cambridge, UK
7. Sobell Department of Motor Neuroscience, UCL Institute of Neurology, London, UK
8. Reta Lila Weston Laboratories, Dept of Molecular Neuroscience, UCL Institute of Neurology, London, UK
9. Department of Clinical Neuroscience, UCL Institute of Neurology, London, UK
10. Department of Molecular Neuroscience, UCL Institute of Neurology, London, UK